The title compound, [RuBr(C(10)H(8)N(2))(C(6)H(12)S(3))]PF(6) or [RuBr(bpy)([9]aneS(3))]PF(6) ([9]aneS(3) is 1,4,7-trithia-cyclo-nonane and bpy is 2,2'-bipyridine), exhibits a very similar octahedral coordination geometry for the Ru(2+) atom to that of its [RuCl(bpy)([9]aneS(3))](+) analogue, with only the chloride ligand being substituted by a bromide ligand. The presence of a PF(6) (-) anion (alongside with the coordinated bromide ligand) promotes the existence of an extensive network of weak C-H⋯X (X = F, Br) inter-actions.